/*
Copyright 2020 The Nocalhost Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
    http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package utils

import (
	"strconv"
	"strings"
)

// IsEmpty
func IsEmpty(s string) bool {
	if s == "" {
		return true
	}

	return strings.TrimSpace(s) == ""
}

// StringToUint64
func StringToUint64(str string) (uint64, error) {
	if str == "" {
		return 0, nil
	}
	valInt, err := strconv.Atoi(str)
	if err != nil {
		return 0, err
	}

	return uint64(valInt), nil
}

// StringToInt64
func StringToInt64(str string) (int64, error) {
	if str == "" {
		return 0, nil
	}
	valInt, err := strconv.Atoi(str)
	if err != nil {
		return 0, err
	}

	return int64(valInt), nil
}

// StringToInt
func StringToInt(str string) (int, error) {
	if str == "" {
		return 0, nil
	}
	valInt, err := strconv.Atoi(str)
	if err != nil {
		return 0, err
	}

	return valInt, nil
}
